<div id="{{slide.id}}" class="step {{slide.class}}" 
  data-x="{{slide.x}}" data-y="{{slide.y}}" {{#slide.z}}data-z="{{.}}"{{/slide.z}} 
   {{#slide.rot}} data-rotate="{{.}}" {{/slide.rot}}
   {{#slide.rotx}}data-rotate-x="{{.}}"{{/slide.rotx}} 
   {{#slide.roty}}data-rotate-y="{{.}}"{{/slide.roty}} 
   {{#slide.scale}} data-scale="{{.}}"{{/slide.scale}}>
 {{{ slide.header }}}
 {{{ slide.content }}}
</div>
